If you have unknown resistor read color pattern from it and put it to color table below (by clicking on cells). You get decoded resistor's parameters (resistance value, tolerance and - when you're using six strips pattern - temperature coefficent) in the result table on the bottom of the page.

If you know resistor's parameter and want to encode them into color strips pattern choose needed parameters in form below color table (resistance value, tolerance and temperature coefficent). Next, you will read colors pattern from schematic resistor's image or from color table (colors used in patterns are bordered).